1 | #include "server.h" |
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2 | |
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3 | int main(int argc, char ** argv) |
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4 | { |
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5 | /* variables to parse arguments */ |
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6 | extern int optind, |
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7 | optopt; |
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8 | extern char * optarg; |
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9 | |
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10 | char * log_file; |
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11 | int c = (int)NULL, |
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12 | errflg = (int)NULL, |
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13 | verbose = (int)NULL, |
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14 | optval = 1; |
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15 | |
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16 | socklen_t optlen = sizeof(optval); |
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17 | |
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18 | /* fd -> file descriptor */ |
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19 | int socket_server_fd = (int)NULL, |
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20 | socket_server_port = (int)NULL, |
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21 | socket_accept_fd = (int)NULL, |
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22 | sockaddr_in_size = sizeof(struct sockaddr_in), |
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23 | err = (int)NULL; |
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24 | |
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25 | /* Internet socket address stuct */ |
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26 | struct sockaddr_in server_addr, |
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27 | accept_addr; |
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28 | |
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29 | struct client * clients = (struct client *) NULL, |
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30 | * current = (struct client *) NULL; |
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31 | |
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32 | pthread_t threads; |
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33 | |
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34 | /* clear screen */ |
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35 | system(__CLEAR_SCREEN__); |
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36 | |
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37 | while ( (c = getopt(argc, argv, ":vp:")) != -1 ) |
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38 | { |
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39 | switch ( c ) |
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40 | { |
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41 | case 'p': |
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42 | if ( socket_server_port = strtol(optarg, 0, 10) == 0 ) |
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43 | { |
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44 | fprintf(stderr, "Option -%c requires a valid port and '%s' isn't valid\n", optopt, optarg); |
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45 | ++errflg; |
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46 | } |
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47 | break; |
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48 | case 'v': |
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49 | verbose = 1; |
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50 | break; |
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51 | case ':': |
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52 | /* -f or -o without operand */ |
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53 | fprintf(stderr, "Option -%c requires an operand\n", optopt); |
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54 | ++errflg; |
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55 | break; |
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56 | case '?': |
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57 | fprintf(stderr, "Unrecognized option: -%c\n", optopt); |
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58 | ++errflg; |
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59 | } |
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60 | } |
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61 | if ( errflg ) |
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62 | { |
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63 | fprintf(stderr, "usage: . . . \n\n"); |
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64 | exit(2); |
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65 | } |
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66 | |
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67 | /* make a socket */ |
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68 | socket_server_fd = socket(AF_INET, SOCK_STREAM, 0); |
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69 | if ( socket_server_fd == __SOCKET_ERROR__ ) |
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70 | { |
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71 | printf("\nCould not make a socket\n"); |
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72 | return 0; |
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73 | } |
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74 | |
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75 | bzero((char *) &server_addr, sockaddr_in_size); |
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76 | bzero((char *) &accept_addr, sockaddr_in_size); |
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77 | |
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78 | if ( !socket_server_port ) |
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79 | socket_server_port = __DEFAULT_OPEN_PORT__; |
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80 | |
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81 | /* fill address struct */ |
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82 | server_addr.sin_addr.s_addr = INADDR_ANY; |
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83 | server_addr.sin_port = htons(socket_server_port); |
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84 | server_addr.sin_family = AF_INET; |
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85 | bzero(&(server_addr.sin_zero), 8); |
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86 | |
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87 | if ( __DEBUG__ || verbose ) |
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88 | printf("\nBinding to port %d...\n", socket_server_port); |
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89 | |
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90 | /* bind to a port */ |
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91 | if ( bind(socket_server_fd, (struct sockaddr *)&(server_addr), sizeof(server_addr)) == __SOCKET_ERROR__ ) |
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92 | { |
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93 | printf("\nCould not connect to host\n"); |
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94 | exit(1); |
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95 | } |
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96 | |
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97 | /* get port number */ |
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98 | getsockname(socket_server_fd, (struct sockaddr *)&(server_addr), (socklen_t *) &(sockaddr_in_size)); |
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99 | if ( __DEBUG__ || verbose ) |
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100 | { |
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101 | printf("\nopened socket as fd (%d) on port (%d) for stream i/o\n", socket_server_fd, ntohs(server_addr.sin_port)); |
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102 | |
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103 | printf("Server\n\ |
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104 | sin_family = %d\n\ |
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105 | sin_addr.s_addr = %d\n\ |
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106 | sin_port = %d\n" |
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107 | , server_addr.sin_family |
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108 | , server_addr.sin_addr.s_addr |
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109 | , ntohs(server_addr.sin_port) |
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110 | ); |
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111 | printf("\nMaking a listen queue of %d elements", __QUEUE_SIZE__); |
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112 | } |
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113 | |
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114 | /* establish listen queue */ |
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115 | if ( listen(socket_server_fd, __QUEUE_SIZE__) == __SOCKET_ERROR__ ) |
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116 | { |
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117 | printf("\nCould not listen\n"); |
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118 | return 0; |
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119 | } |
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120 | |
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121 | for ( ; ; ) |
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122 | { |
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123 | if ( __DEBUG__ || verbose ) |
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124 | puts("\nWaiting for a connection\n"); |
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125 | |
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126 | /* get the connected socket */ |
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127 | socket_accept_fd = accept(socket_server_fd, (struct sockaddr *) &(accept_addr), (socklen_t *) &(sockaddr_in_size)); |
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128 | fcntl(socket_accept_fd, F_SETFL, fcntl(socket_accept_fd, F_GETFL, 0) | O_NDELAY); |
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129 | |
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130 | if ( socket_accept_fd > -1 ) |
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131 | { |
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132 | if ( clients == (struct client *) NULL ) |
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133 | current = clients; |
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134 | else |
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135 | while ( (current = clients->next) != (struct client *) NULL ); |
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136 | |
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137 | current = (struct client *) malloc(sizeof(struct client)); |
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138 | current->next = (struct client *) NULL; |
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139 | current->fd = socket_accept_fd; |
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140 | current->sockaddr = accept_addr; |
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141 | current->last = time(NULL); |
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142 | |
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143 | pthread_create(&(threads), NULL, handler, (void *) current); |
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144 | } |
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145 | } |
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146 | pthread_exit(NULL); |
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147 | } |
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148 | |
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149 | int starttls(int * jabberfd, int * clientfd) |
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150 | { |
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151 | int err; |
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152 | |
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153 | SSL_CTX * ctx; |
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154 | SSL * clientssl, |
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155 | * jabberssl; |
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156 | |
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157 | OpenSSL_add_all_algorithms(); |
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158 | SSL_library_init(); |
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159 | SSL_load_error_strings(); |
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160 | |
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161 | |
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162 | if ( !(ctx = SSL_CTX_new(TLSv1_server_method())) ) |
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163 | { |
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164 | printf("Error creating the context.\n"); |
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165 | exit(0); |
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166 | } |
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167 | |
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168 | SSL_CTX_set_verify(ctx,SSL_VERIFY_NONE,NULL); |
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169 | |
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170 | /* |
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171 | clientssl = SSL_new(ctx); |
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172 | |
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173 | puts("#1"); |
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174 | SSL_set_fd(clientssl, *(clientfd)); |
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175 | |
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176 | puts("accept"); |
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177 | err = SSL_accept(clientssl); |
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178 | // Check for error in connect. |
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179 | if ( err < 1 ) |
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180 | { |
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181 | puts("server"); |
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182 | SSL_CTX_free(ctx); |
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183 | return 0; |
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184 | } |
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185 | */ |
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186 | |
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187 | jabberssl = SSL_new(ctx); |
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188 | |
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189 | puts("#2"); |
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190 | SSL_set_fd(jabberssl, *(jabberfd)); |
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191 | |
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192 | puts("connect"); |
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193 | err = SSL_connect(jabberssl); |
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194 | /* Check for error in connect. */ |
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195 | if ( err < 1 ) |
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196 | { |
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197 | puts("client"); |
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198 | SSL_CTX_free(ctx); |
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199 | return 0; |
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200 | } |
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201 | |
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202 | return 1; |
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203 | } |
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204 | |
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205 | void * handler(void * pClient) |
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206 | { |
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207 | char buffer_client[__BUFFER_SIZE__], |
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208 | buffer_jabber[__BUFFER_SIZE__]; |
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209 | struct client * client = (struct client *) pClient; |
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210 | int i = 0, err; |
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211 | time_t last; |
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212 | |
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213 | char ip[46]; |
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214 | unsigned short port; |
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215 | inet_ntop(AF_INET, &(client->sockaddr.sin_addr), ip, sizeof (ip)); |
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216 | port = ntohs(client->sockaddr.sin_port); |
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217 | printf("\nGot a connection from %s, port %hu\n", ip, port); |
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218 | /*---------------------------------------------------*/ |
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219 | |
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220 | int jabber_fd = (int)NULL, |
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221 | jabber_port = (int)NULL, |
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222 | jabber_error = (int)NULL; |
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223 | |
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224 | struct sockaddr_in jabber_addr; |
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225 | |
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226 | jabber_port = __DEFAULT_JABBER_PORT__; |
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227 | jabber_fd = socket(AF_INET, SOCK_STREAM, 0); |
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228 | |
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229 | fcntl(jabber_fd, F_SETFL, fcntl(jabber_fd, F_GETFL, 0) | O_NDELAY); |
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230 | |
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231 | jabber_addr.sin_family = AF_INET; |
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232 | inet_aton(__DEFAULT_JABBER_IP__, &jabber_addr.sin_addr); |
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233 | //jabber_addr.sin_addr.s_addr = inet_addr(__DEFAULT_JABBER_IP__); |
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234 | jabber_addr.sin_port = htons(jabber_port); |
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235 | |
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236 | jabber_error = connect(jabber_fd, (struct sockaddr *) &(jabber_addr), sizeof(jabber_addr)); |
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237 | |
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238 | last = time(NULL); |
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239 | int client_is_connected = -1; |
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240 | int jabber_is_connected = -1; |
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241 | int sockaddr_in_size = sizeof(struct sockaddr_in); |
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242 | while ( client_is_connected != 0 ) |
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243 | { |
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244 | /* read from client */ |
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245 | puts("\tread - client"); |
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246 | bzero(buffer_client, __BUFFER_SIZE__); |
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247 | if ( (client_is_connected = read(client->fd, buffer_client, __BUFFER_SIZE__)) != 0 && strlen(buffer_jabber) > 0 ) |
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248 | { |
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249 | puts("\twrite - client"); |
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250 | printf("\t%s\n", buffer_jabber); |
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251 | /* write in the client */ |
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252 | write(client->fd, buffer_jabber, strlen(buffer_jabber)); |
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253 | } |
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254 | |
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255 | /* read from jabber service */ |
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256 | puts("\tread - jabber"); |
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257 | bzero(buffer_jabber, __BUFFER_SIZE__); |
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258 | if ( (jabber_is_connected = read(jabber_fd, buffer_jabber, __BUFFER_SIZE__)) && strlen(buffer_client) > 0 ) |
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259 | { |
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260 | puts("\twrite - jabber"); |
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261 | printf("\t%s\n", buffer_client); |
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262 | /* write in the jabber service */ |
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263 | if ( !strstr(buffer_jabber, "<proceed xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>") ) |
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264 | write(jabber_fd, buffer_client, strlen(buffer_client)); |
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265 | } |
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266 | if ( strstr(buffer_jabber, "<proceed xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>") ) |
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267 | { |
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268 | fcntl(jabber_fd, F_SETFL, fcntl(jabber_fd, F_GETFL, 0) | ~O_NDELAY); |
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269 | //starttls(&jabber_fd, &client->fd); |
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270 | int err; |
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271 | |
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272 | SSL_CTX * ctx; |
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273 | SSL * jabberssl; |
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274 | |
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275 | //OpenSSL_add_all_algorithms(); |
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276 | |
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277 | SSL_library_init(); |
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278 | SSL_load_error_strings(); |
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279 | |
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280 | if ( !(ctx = SSL_CTX_new(TLSv1_server_method())) ) |
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281 | { |
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282 | printf("Error creating the context.\n"); |
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283 | exit(0); |
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284 | } |
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285 | |
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286 | SSL_CTX_set_verify(ctx,SSL_VERIFY_NONE,NULL); |
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287 | |
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288 | jabberssl = SSL_new(ctx); |
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289 | |
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290 | puts("#1"); |
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291 | err=SSL_set_fd(jabberssl, jabber_fd); |
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292 | if ( err < 1 ) |
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293 | { |
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294 | puts("shsfghdfgh"); |
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295 | SSL_CTX_free(ctx); |
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296 | } |
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297 | |
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298 | puts("connect"); |
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299 | err = SSL_connect(jabberssl); |
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300 | if ( err < 1 ) |
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301 | { |
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302 | puts("client"); |
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303 | err = SSL_get_error(jabberssl, err); |
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304 | printf("%d\n", err); |
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305 | char err_str[1024]; |
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306 | ERR_error_string_n(ERR_get_error(), err_str, sizeof(err_str)); |
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307 | printf("%s\n", err_str); |
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308 | SSL_CTX_free(ctx); |
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309 | } |
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310 | } |
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311 | |
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312 | if ( jabber_is_connected == 0 ) |
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313 | client_is_connected = jabber_is_connected; |
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314 | |
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315 | puts("end loop"); |
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316 | usleep(500000); |
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317 | } |
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318 | |
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319 | if ( close(jabber_fd) == __SOCKET_ERROR__ ) |
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320 | { |
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321 | printf("\nCould not close jabber socket\n"); |
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322 | return 0; |
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323 | } |
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324 | /*---------------------------------------------------*/ |
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325 | if ( close(client->fd) == __SOCKET_ERROR__ ) |
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326 | { |
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327 | printf("\nCould not close socket\n"); |
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328 | return 0; |
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329 | } |
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330 | |
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331 | fflush(stdin); |
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332 | fflush(stdout); |
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333 | free(client); |
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334 | pthread_exit(NULL); |
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335 | } |
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